Sewage index increasing treatment system and sewage treatment method

Abstract

The invention provides a sewage index increasing treatment system. The sewage index increasing treatment system comprises a treatment tank, a water inlet unit, an aeration unit and a water outlet unit; a filter base plate is arranged in the treatment tank, the interior of the treatment tank is divided into an upper aerobiotic cavity and a lower anaerobic cavity by the filter base plate, and water is injected into the anaerobic cavity through the water inlet unit; the aeration unit is communicated with the aerobiotic cavity and used for supplying air to the aerobiotic cavity; the water outlet unit is communicated with a water outlet formed in the upper portion of the aerobiotic cavity and used for draining the water out of the treatment tank; an internal circulating pipe is arranged in the treatment tank, one end of the internal circulating pipe is arranged in the anaerobic cavity, and the other end of the internal circulating pipe is arranged in the aerobiotic cavity. The sewage index increasing treatment system is small in occupied area, low in investment and operation cost and high in shock resistance load capacity, and automated control and management can be achieved through control over a valve; by means of sewage treatment, the indexes of COD, BOD, SS and ammonia nitrogen pollutants in sewage can be significantly decreased, and then the sewage drainage standard obtained after index increasing improvement is met.

Description

technical field [0001] The invention belongs to the field of environment, and relates to a sewage treatment system and a sewage treatment method. Background technique [0002] According to the statistics of the Ministry of Environmental Protection, from 2003 to 2013, the national total wastewater discharge maintained a rapid growth trend, with a compound growth rate of 4.22%. The proportion of domestic sewage discharge in the total wastewater discharge also increased year by year. The discharge of domestic sewage reached 48.51 billion tons, accounting for 69.76% of the total discharge of wastewater. The discharge of domestic sewage continued to grow and has a tendency to accelerate. [0003] State Environmental Protection Administration Huanfa [2005] No. 110 "Notice on Strictly Implementing Pollutant Discharge Standards for Urban Sewage Treatment Plants" stated for the first time that "in order to prevent eutrophication of waters, the effluent of urban domestic sewage treatm...

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Problems solved by technology

However, in the face of strict sewage discharge standards after upgrading and transformation, when transforming existing processes, there will be large investment, and it is dif...

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